Roller pump



FIG. 1 is an oblique perspective view of the roller pump of this disclosure.

FIG. 2 is a front view of the roller pump of this disclosure.

FIG. 3 is a rear view of the roller pump of this disclosure.

FIG. 4 is a side view of the right-hand side of the roller pump of this disclosure.

FIG. 5 is a side view of the left-hand side of the roller pump of this disclosure.

FIG. 6 is a plan view of the roller pump of this disclosure; and,

FIG. 7 is a bottom view of the roller pump of this disclosure.

The broken line showing of elements is included for the purpose of illustrating environmental matter and forms no part of the claimed design. 

CLAIM The ornamental design for a roller pump, as shown and described. 